Backlight module, liquid crystal display panel and display device

Abstract

The utility model discloses a backlight module, a liquid crystal display panel and a display device, and belongs to the technical field of display. The backlight module comprises a frame body, and a lateral light source, a light guide plate and a reflector plate which are positioned in the frame body, the light guide plate can be in contact with the back plate through the contact part and the hollow area of the reflector plate, so that electrostatic charges in the light guide plate are guided to the back plate through the contact part and are released. Therefore, even if a periodically changing electric field is formed between the touch liquid crystal display panel and the back plate in the backlight module, as the electrostatic charges in the light guide plate are released through the contact part, the light guide plate does not generate periodically changing deformation under the action of the periodically changing electric field force, and the light guide plate does not generate vibration; and the backlight module does not give out whistling sound.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a backlight module, a liquid crystal display panel, and a display device. Background Technology

[0002] Liquid crystal display devices are characterized by their small size, low power consumption, and no radiation. With their mature manufacturing and supply chain system, they have demonstrated strong comprehensive competitiveness in terms of display performance and production cost, and still occupy a dominant position in the current display market.

[0003] However, the presence of a large amount of electrostatic charge in liquid crystal display devices results in low reliability. Utility Model Content

[0004] This application provides a backlight module, a liquid crystal display panel, and a display device. It can solve the problem of low reliability in existing liquid crystal display devices. The technical solution is as follows:

[0005] On the one hand, a backlight module is provided, including: a frame, and a side-lit light source, a light guide plate and a reflector located within the frame;

[0006] The frame includes: a back plate with conductivity;

[0007] The light-emitting surface of the light source faces the side of the light guide plate, and the side of the light guide plate facing the back plate has a contact portion, which contacts the back plate.

[0008] The reflective sheet is located between the light guide plate and the back plate, and the reflective sheet has a hollow area;

[0009] The orthographic projection of the contact portion on the back plate is located within the orthographic projection of the hollowed-out area on the back plate.

[0010] Optionally, the contact portion includes at least a conductive portion; the conductive portion includes at least one layer of conductive adhesive and at least one layer of conductive material, which are stacked together, and the conductive adhesive layer is bonded to the light guide plate and / or the back plate.

[0011] Optionally, the conductive portion includes multiple layers of the conductive adhesive layer and multiple layers of the conductive material layer, with the multiple layers of the conductive adhesive layer and multiple layers of the conductive material layer arranged alternately.

[0012] Optionally, at least one of the conductive material layers in the contact portion includes: a buffer layer, and a conductive material film covering the outside of the buffer layer.

[0013] Optionally, the thickness of the conductive portion is the same as the thickness of the reflective sheet;

[0014] Alternatively, the light guide plate may have a groove on the side facing the back plate, a portion of the conductive part being located within the groove, and the thickness of the conductive part being equal to the sum of the depth of the groove and the thickness of the reflective sheet.

[0015] Optionally, the contact portion includes at least a protrusion; the protrusion is integrally formed with the light guide plate.

[0016] Optionally, the contact portion includes: a conductive portion and a protrusion stacked together; the protrusion is integrally formed with the light guide plate, and the conductive portion is closer to the back plate than the protrusion.

[0017] Optionally, the light guide plate has a light transmission area and an auxiliary area; the light transmission area is used to transmit the light emitted by the light source, and after the light is emitted by the light source, the brightness of the light transmission area is greater than the brightness of the auxiliary area;

[0018] Wherein, the orthographic projection of the contact portion on the back plate is located within the orthographic projection of the auxiliary partition on the back plate.

[0019] Optionally, the orthographic projection of the hollowed-out area on the back panel is located within the orthographic projection of the auxiliary partition on the back panel.

[0020] Optionally, the light source includes: a strip-shaped circuit board, and a plurality of light-emitting units located on one side of the circuit board; the extension direction of the circuit board is parallel to a first direction, and the plurality of light-emitting units are arranged along the first direction;

[0021] The auxiliary partitions include: two first auxiliary partitions distributed on both sides of the plurality of light-emitting units in the first direction, and / or, a second auxiliary partition distributed between two adjacent light-emitting units in the first direction.

[0022] Optionally, if the auxiliary partition includes two first auxiliary partitions, the contact portion includes a first contact portion, and the orthographic projection of the first contact portion on the back panel is located within the orthographic projection of the first auxiliary partition on the back panel.

[0023] The light guide plate includes two first corners distributed on both sides of the light source in the first direction; the first auxiliary partition is distributed between the outer edge of the first corner and the light beam emitted by the outermost light-emitting unit among the plurality of light-emitting units; the overall extension direction of the first auxiliary partition intersects with the first direction.

[0024] Optionally, the cutout area includes a first cutout area, the orthographic projection of the first cutout area on the back panel being located within the orthographic projection of the first auxiliary partition on the back panel;

[0025] The shape of the first hollow area projected onto the back plate is similar to the shape of the first contact portion projected onto the back plate.

[0026] And / or, the shape of the orthographic projection of the first cutout area on the back panel is similar to the shape of the orthographic projection of the first auxiliary partition on the back panel.

[0027] Optionally, the shape of the orthographic projection of the first contact portion on the back plate is rectangular, and the direction of the long side of the rectangle is parallel to the overall extension direction of the first auxiliary partition.

[0028] Alternatively, the shape of the first contact portion projected onto the back plate is an arch formed by a circular arc edge and a straight edge, wherein the direction of the straight edge of the arch is parallel to the overall extension direction of the first auxiliary partition, and the circular arc edge of the arch is located on the side of the straight edge away from the corner portion.

[0029] Alternatively, there may be multiple first contact portions whose orthographic projections are located within the same first auxiliary partition. The orthographic projections of each first contact portion on the back plate are square, circular, or elliptical in shape, and the area of ​​the orthographic projections of the multiple first contact portions on the back plate gradually decreases along the transmission direction of the light beam emitted by the light-emitting unit.

[0030] Optionally, when the auxiliary partition includes multiple second auxiliary partitions, the contact portion includes a second contact portion, and the orthographic projection of the second contact portion on the back panel is located within the orthographic projection of the second auxiliary partition on the back panel;

[0031] The second auxiliary partition is distributed between the light guide plate near the boundary of the light source and the light beams emitted by two adjacent light-emitting units.

[0032] Optionally, the cutout area includes a second cutout area, the orthographic projection of the second cutout area on the back panel being located within the orthographic projection of the second auxiliary partition on the back panel;

[0033] The shape of the orthographic projection of the second hollow area on the back plate is similar to the shape of the orthographic projection of the second contact portion on the back plate.

[0034] Optionally, the shape of the orthographic projection of the second hollow area on the back panel is similar to the shape of the orthographic projection of the second auxiliary partition on the back panel.

[0035] Optionally, the backlight module further includes: an auxiliary contact portion, which is fixedly connected to the second contact portion, and the auxiliary contact portion and the second contact portion are an integral structure; and the orthographic projection of the auxiliary contact portion on the back plate is located within the orthographic projection of the light source on the back plate;

[0036] The reflective sheet also has an auxiliary cutout area, the orthographic projection of which on the back plate is located between the orthographic projections of two adjacent light-emitting units on the back plate.

[0037] The orthographic projection of the auxiliary contact portion on the back plate is located within the orthographic projection of the auxiliary hollow area on the back plate.

[0038] Optionally, the frame further includes an outer frame connected to the outer edge of the back panel;

[0039] Wherein, if no baffle is provided on the side of the outer frame adjacent to the light source facing the light source, the auxiliary contact portion is distributed between at least two connected light-emitting units in the first direction;

[0040] Alternatively, if a first barrier is provided on the side of the outer frame adjacent to the light source facing the light source, the orthographic projection of the auxiliary contact portion on the back plate is located between the orthographic projection of the first barrier on the back plate and the orthographic projection of the light guide plate on the back plate.

[0041] Optionally, if no barrier is provided on the side of the outer frame adjacent to the light source facing the light source, and the second contact portion is a conductive portion, the orthographic projection of the auxiliary contact portion on the back plate overlaps with the orthographic projection of the two connected light-emitting units on the back plate.

[0042] Optionally, the shape of the second contact portion and the auxiliary contact portion projected onto the back plate is circular or triangular.

[0043] On the other hand, a display device is provided, including: a backlight module and a liquid crystal display panel located on the light-emitting side of the backlight module; the backlight module is the backlight module described above.

[0044] Optionally, the liquid crystal display panel includes: an array substrate, a color filter substrate, a first polarizer, and a conductive adhesive portion;

[0045] The array substrate and the color filter substrate are disposed opposite to each other, and the portion of the array substrate that protrudes from the color filter substrate is the substrate protrusion.

[0046] The first polarizer is located on the side of the color filter substrate away from the array substrate, and the portion of the first polarizer protruding from the color filter substrate is a polarizing protrusion; the side of the substrate protrusion facing the first polarizer has a ground electrode, and the orthographic projection of the ground electrode on the first polarizer overlaps with the area where the polarizing protrusion is located.

[0047] The conductive adhesive portion is located between the substrate protrusion and the polarizing protrusion, and the two sides of the conductive adhesive portion that are opposite to each other are in direct contact with the ground electrode and the polarizing protrusion, respectively.

[0048] Optionally, the orthographic projection of the conductive adhesive portion on the array substrate covers the area where the ground electrode is located.

[0049] Optionally, the polarizing protrusion has a first window area, the orthographic projection of the first window area on the array substrate overlapping the orthographic projection of the conductive adhesive portion on the array substrate.

[0050] Optionally, the side of the substrate protrusion facing the first polarizer also has a plurality of functional electrodes, and the orthographic projection of the polarizing protrusion on the array substrate overlaps with the area where the plurality of functional electrodes are located.

[0051] The liquid crystal display panel further includes an insulating adhesive portion located between the substrate protrusion and the polarizing protrusion; the orthogonal projection of the insulating adhesive portion on the array substrate covers the area where the plurality of functional electrodes are located.

[0052] Optionally, the side of the substrate protrusion facing the first polarizer also has an alignment mark, and the area where the alignment mark is located is between the orthographic projection of the conductive adhesive portion on the array substrate and the orthographic projection of the insulating adhesive portion on the array substrate.

[0053] Optionally, the polarizing protrusion has a second window area, the orthographic projection of which covers the area where the alignment mark is located on the array substrate.

[0054] Optionally, when the polarizing protrusion has both the first window area and the second window area, the first window area and the second window area are connected, or the first window area and the second window area are separated.

[0055] Wherein, the first window area and / or the second window area are connected to the outer edge of the polarizing protrusion, or the first window area and / or the second window area are spaced apart from the outer edge of the polarizing protrusion.

[0056] Optionally, the polarizing protrusion has a hollowed-out avoidance area; the substrate protrusion also has a plurality of bonding electrodes on the side facing the polarizing protrusion, the plurality of bonding electrodes being used for bonding and connecting with the driving component;

[0057] The hollowed-out avoidance area, when projected onto the array substrate, covers the region where the multiple bonded electrodes are located.

[0058] Optionally, the liquid crystal display panel further includes a protective cover plate; the protective cover plate is located on the side of the first polarizer away from the color filter substrate.

[0059] In another aspect, a crystal display panel is provided, comprising: an array substrate, a color filter substrate, a first polarizer, and a conductive adhesive portion;

[0060] The array substrate and the color filter substrate are disposed opposite to each other, and the portion of the array substrate that protrudes from the color filter substrate is the substrate protrusion.

[0061] The first polarizer is located on the side of the color filter substrate away from the array substrate, and the portion of the first polarizer protruding from the color filter substrate is a polarizing protrusion.

[0062] The substrate protrusion has a ground electrode on the side facing the polarizing protrusion, and the area where the ground electrode is located overlaps with the orthographic projection of the polarizing protrusion on the array substrate.

[0063] The conductive adhesive portion is located between the substrate protrusion and the polarizing protrusion, and the two sides of the conductive adhesive portion that are opposite to each other are in direct contact with the ground electrode and the polarizing protrusion, respectively.

[0064] The beneficial effects of the technical solutions provided in this application include at least the following:

[0065] The light guide plate provided in this embodiment can contact the back plate through the contact portion and the hollow area of ​​the reflective sheet, so that the electrostatic charge in the light guide plate is guided to the back plate through the contact portion and released. In this way, even if a periodically changing electric field is formed between the touch liquid crystal display panel and the back plate in the backlight module, since the electrostatic charge in the light guide plate has been released through the contact portion, the light guide plate will not undergo periodically changing deformation under the action of the periodically changing electric field force, the light guide plate will not vibrate, and the backlight module will not emit a whistling sound. Attached Figure Description

[0066] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0067] Figure 1 This is a top view of a backlight module provided in an embodiment of this application;

[0068] Figure 2 yes Figure 1 The diagram shows the film structure of the backlight module at point A-A'.

[0069] Figure 3 This is a schematic diagram of the film structure of a backlight module provided in an embodiment of this application;

[0070] Figure 4 This is a schematic diagram of the film layer structure of another backlight module provided in the embodiments of this application;

[0071] Figure 5 This is a schematic diagram of the film layer structure of another backlight module provided in the embodiments of this application;

[0072] Figure 6 yes Figure 5 A three-dimensional structural diagram of the light guide plate and the protrusion is shown;

[0073] Figure 7 This is a schematic diagram of the film layer structure of another backlight module provided in the embodiments of this application;

[0074] Figure 8 This is a schematic diagram of the film structure of a backlight module provided in another embodiment of this application;

[0075] Figure 9 This is a schematic diagram of a film structure of a conductive part provided in an embodiment of this application;

[0076] Figure 10 This is a schematic diagram of another conductive part film structure provided in an embodiment of this application;

[0077] Figure 11 This is a partially enlarged top view of a backlight module provided in an embodiment of this application;

[0078] Figure 12 This is a partial enlarged view of a first auxiliary partition provided in an embodiment of this application;

[0079] Figure 13 This is a partial enlarged view of another first auxiliary partition provided in the embodiments of this application;

[0080] Figure 14 This is a partial enlarged view of another first auxiliary partition provided in the embodiments of this application;

[0081] Figure 15 This is a partial enlarged view of another first auxiliary partition provided in the embodiments of this application;

[0082] Figure 16 This is a partial enlarged view of a second auxiliary partition provided in an embodiment of this application;

[0083] Figure 17 This is a partial enlarged view of another second auxiliary partition provided in an embodiment of this application;

[0084] Figure 18 This is a partial enlarged view of another second auxiliary partition provided in the embodiments of this application;

[0085] Figure 19 yes Figure 18 A schematic diagram of the membrane structure at point B-B';

[0086] Figure 20 This is a partial enlarged view of another second auxiliary partition provided in the embodiments of this application;

[0087] Figure 21 yes Figure 20 A schematic diagram of the membrane structure at C-C';

[0088] Figure 22 This is a partially enlarged view of a second auxiliary partition provided in another embodiment of this application;

[0089] Figure 23 yes Figure 22 A schematic diagram of the membrane structure at point D-D';

[0090] Figure 24 This is a schematic diagram of the film structure of a display device provided in an embodiment of this application;

[0091] Figure 25 This is a schematic diagram of the film layer structure of a liquid crystal display panel provided in an embodiment of this application;

[0092] Figure 26 This is a schematic diagram of the film structure of a liquid crystal display panel that uses silicone sealant for buffer protection;

[0093] Figure 27 This is a top view of a liquid crystal display panel provided in an embodiment of this application;

[0094] Figure 28 yes Figure 27 A schematic diagram of the membrane structure at E-E';

[0095] Figure 29This is a schematic diagram of the film structure of an insulating adhesive portion provided in an embodiment of this application;

[0096] Figure 30 This is a schematic diagram of another insulating adhesive layer structure provided in an embodiment of this application;

[0097] Figure 31 This is a partially enlarged top view of a liquid crystal display panel provided in an embodiment of this application;

[0098] Figure 32 This is a partially enlarged top view of another liquid crystal display panel provided in an embodiment of this application;

[0099] Figure 33 This is a partially enlarged top view of another liquid crystal display panel provided in the embodiments of this application;

[0100] Figure 34 This is a schematic diagram showing the use of silver paste to connect the first polarizer and the ground electrode;

[0101] Figure 35 This is a top view of the chip bonding area provided in an embodiment of this application. Detailed Implementation

[0102] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0103] Please refer to Figure 1 and Figure 2 , Figure 1 This is a top view of a backlight module provided in an embodiment of this application. Figure 2 yes Figure 1 The diagram shows the film structure of the backlight module at point A-A'. The backlight module 000 includes: a frame 100, and a side-lit light source 200, a light guide plate 300, and a reflective sheet 400 located within the frame 100.

[0104] The frame 100 in the backlight module 000 includes a conductive backplate 110. The backplate 110 can effectively support the light guide plate 300 and the reflector 400 in the backlight module 000.

[0105] In the backlight module 000, the light-emitting surface of the light source 200 faces the side of the light guide plate 300, and the side of the light guide plate 300 facing the back plate 110 has a contact portion 310 that contacts the back plate 110. Here, light emitted from the light-emitting surface of the light source 200 can enter the interior of the light guide plate 300 from the side, and the light entering the interior of the light guide plate 300 can be guided by the light guide plate 300 to its front surface before exiting. The front surface of the light guide plate 300 is the light-emitting surface of the backlight module 000. Subsequently, after the liquid crystal display panel is placed on the light-emitting side of the backlight module 000, the light emitted from the backlight module 000 can be directed to the liquid crystal display panel, enabling the liquid crystal display panel to display images normally.

[0106] The reflective sheet 400 in the backlight module 000 is located between the light guide plate 300 and the back plate 110. Here, the reflective sheet 400 can reflect the light emitted from the side of the light guide plate 300 facing the back plate 110 back to the light guide plate 300, so that the light reflected back to the light guide plate 300 can be emitted from the side of the light guide plate 300 towards the optical film 500, thereby improving the light extraction efficiency of the backlight module 000.

[0107] It should be noted that since the reflective sheet 400 is located between the light guide plate 300 and the back plate 110, and the contact portion 310 in the light guide plate 300 needs to contact the back plate 110, the reflective sheet 400 needs to avoid the contact portion 310 in the light guide plate 300. In this case, the reflective sheet 400 has a cutout area S, and the orthographic projection of the contact portion 310 in the light guide plate 300 onto the back plate 110 is located within the orthographic projection of the cutout area S onto the back plate 110. Thus, the contact portion 310 in the light guide plate 300 can contact the back plate 110 through the cutout area S. For example, the distance between the boundary of the orthographic projection of the cutout area S onto the back plate 100 and the boundary of the orthographic projection of the contact portion 310 onto the back plate 100 ranges from 0.05 mm to 0.15 mm.

[0108] In this application, the backlight module 000 may further include an optical film 500. The optical film 500 in the backlight module 000 is located on the side of the light guide plate 300 facing away from the reflective sheet 400. Here, the optical film 500 may include a first diffuser sheet, a first prism sheet, a second prism sheet, and a second diffuser sheet stacked along a direction perpendicular to and away from the light guide plate 300. These optical films can adjust the light emitted from the light guide plate 300, making the light subsequently incident on the liquid crystal display panel more uniform.

[0109] It should be noted that the backlight module 000 can be assembled with a touch-sensitive LCD panel. During the operation of the touch-sensitive LCD panel, the touch chip in the touch-sensitive LCD panel can apply periodically changing AC scanning pulse signals to the LCD panel, and the backplate 110 can serve as a grounding structure in the backlight module 000. In this case, the touch-sensitive LCD panel and the backplate 110 in the backlight module 000 are equivalent to two electrode plates, generating a periodically changing potential difference between the touch-sensitive LCD panel and the backplate 110 in the backlight module 000, forming a periodically changing electric field. Since the light guide plate 300 is located between the backplate 110 and the touch-sensitive LCD panel, and the light guide plate 300 accumulates a large amount of electrostatic charge during the backlight manufacturing process, these electrostatic charges are subjected to periodically changing electric field forces in the periodically changing electric field. Consequently, the light guide plate 300 undergoes periodically changing deformation under the action of the periodically changing electric field forces, generating vibration and thus emitting a whistling sound.

[0110] In this embodiment, the contact portion 310 in the light guide plate 300 can contact the back plate 110 through the cutout area S, allowing the electrostatic charge in the light guide plate 300 to be guided to the back plate 110 and released through the contact portion 310. Thus, even if a periodically changing electric field is formed between the touch LCD panel and the back plate 110 in the backlight module 000, because the electrostatic charge in the light guide plate 300 has been released through the contact portion 310, the light guide plate 300 will not undergo periodically changing deformation under the action of the periodically changing electric field force, the light guide plate 300 will not vibrate, and the backlight module 000 will not emit a whistling sound.

[0111] In summary, the backlight module provided in this application includes a frame, and a side-lit light source, a light guide plate, and a reflector located within the frame. The light guide plate can contact the backplate through a contact portion and a cutout area of ​​the reflector, allowing electrostatic charges in the light guide plate to be guided to and released through the contact portion onto the backplate. Thus, even if a periodically changing electric field is formed between the touch LCD panel and the backplate in the backlight module, because the electrostatic charges in the light guide plate have been released through the contact portion, the light guide plate will not undergo periodically changing deformation under the influence of the periodically changing electric field force, the light guide plate will not vibrate, and the backlight module will not emit a whistling sound.

[0112] In the embodiments of this application, please refer to Figure 1 and Figure 3 , Figure 3This is a schematic diagram of the film layer structure of a backlight module provided in an embodiment of this application. The light source 200 in the backlight module 000 includes: a strip-shaped circuit board 210, and a plurality of light-emitting units 220 located on one side of the circuit board 210. The extending direction of the circuit board 210 is parallel to a first direction x, and the plurality of light-emitting units 220 are arranged along the first direction x. Here, for better viewing... Figure 1 The distribution position of the middle reflector 400 is in Figure 1 The strip-shaped circuit board 210 in the light source 200 is not shown in the drawing.

[0113] like Figure 1 As shown, the multiple light-emitting units 220 in the side-lit light source 200 can be arranged in a row along the first direction X. The light-emitting surfaces of all the multiple light-emitting units 220 need to face the side of the light guide plate 300, and it needs to be ensured that the light-emitting surfaces of the multiple light-emitting units 220 are in contact with the side of the light guide plate 300. It should be noted that in other embodiments, the multiple light-emitting units 220 in the side-lit light source 200 can be arranged in at least two rows. This application embodiment does not limit this. For example, each light-emitting unit 220 can be a light-emitting diode (LED).

[0114] Optionally, the circuit board 210 in the light source 200 can be mounted on the side of the light guide plate 300 facing away from the back plate 110. That is, the multiple light-emitting units 220 are closer to the back plate 110 relative to the circuit board 210. In this case, as... Figure 3 As shown, the backlight module 000 may also include a first colloid 230, which is located between the circuit board 210 and the light guide plate 300. The circuit board 210 can be bonded to the side of the light guide plate 300 away from the back plate 110 by the first colloid 230.

[0115] In this application, the frame 100 may further include an outer frame 120 connected to the outer edge of the back panel 110. The frame 1001 is typically a one-piece molded frame made of plastic and iron. The outer frame 120 may be a plastic frame formed by injection molding. The back panel 110 and the outer frame 120 in the frame 100 may also be engaged by snap-fit. This application does not limit this aspect. For example, the back panel 110 may be made of a metal material with good heat dissipation; for instance, the back panel 110 may be made of aluminum.

[0116] The circuit board 210 in the light source 200 can also be mounted on the side of the outer frame 120 opposite to the back plate 110. In this case, as... Figure 3 As shown, the backlight module 000 may also include a second adhesive 240, which is located between the circuit board 210 and the outer frame 120. The circuit board 210 can be bonded to the side of the outer frame 120 away from the back plate 110 by the second adhesive 240.

[0117] It should be noted that, as Figure 3 As shown, when the circuit board 210 can be mounted on the side of the light guide plate 300 away from the back plate 110, and the outer frame 120 away from the back plate 110, there is a gap between the light-emitting unit 200 and the back plate 110. Normally, the distance between the light-emitting unit 200 and the back plate 110 is greater than or equal to the thickness of the reflector 400.

[0118] In this embodiment, the contact portion 310 in the backlight module 000 may include a conductive portion 311 and / or a protrusion 312 integrally formed with the light guide plate 300. That is, the contact portion 310 in the backlight module 000 may include only the conductive portion 311, or only the protrusion 312, or both the conductive portion 311 and the protrusion 312. This application illustrates these three possible embodiments as examples.

[0119] In the first possible embodiment, please refer to Figure 3 and Figure 4 , Figure 4 This is a schematic diagram of the film layer structure of another backlight module provided in an embodiment of this application. The contact portion 310 in the backlight module 000 includes at least a conductive portion 311, such as... Figure 3 As shown, the thickness of the conductive part 311 is the same as the thickness of the reflective sheet 400. This allows the side of the conductive part 311 facing away from the light guide plate 300 to directly contact the back plate 110, enabling electrostatic charges in the light guide plate 300 to be guided to the back plate 110 and released through the contact part 310; or, as... Figure 4 As shown, the light guide plate 300 may also have a groove O on the side facing the back plate 110. A portion of the conductive part 311 is located in the groove O, and the thickness of the conductive part 300 is equal to the sum of the depth of the groove O and the thickness of the reflective sheet 400. In this way, the side of the conductive part 311 away from the light guide plate 300 can directly contact the back plate 110. During the process of electrostatic charge in the light guide plate 300 being guided to the back plate 110 through the contact part 310 and released, the release efficiency of electrostatic charge in the light guide plate 300 is high due to the large contact area between the conductive part 300 and the light guide plate 300.

[0120] In the second possible embodiment, please refer to Figure 5 and Figure 6 , Figure 5 This is a schematic diagram of the film layer structure of another backlight module provided in the embodiments of this application. Figure 6 yes Figure 5The diagram shows a three-dimensional structure of the light guide plate and the protrusion. The contact portion 310 in the backlight module 000 includes at least a protrusion 312, which is integrally formed with the light guide plate 300. The thickness of the protrusion 312 is the same as the thickness of the reflective sheet 400, allowing the side of the protrusion 312 facing away from the light guide plate 300 to directly contact the back plate 110, enabling electrostatic charges in the light guide plate 300 to be guided to and released from the back plate 110 through the contact portion 310.

[0121] Here, when the contact portion 310 only includes the protrusion 312, the protrusion 312 can be integrally formed with the light guide plate 300 through injection molding, or it can be formed through other processes that form it together. This application embodiment does not limit this.

[0122] In the third possible embodiment, please refer to Figure 7 , Figure 7 This is a schematic diagram of the film layer structure of another backlight module provided in this application embodiment. The contact portion 310 in the backlight module 000 includes a conductive portion 311 and a protrusion 312 stacked together, and the protrusion 312 is integrally formed with the light guide plate 300. The conductive portion 311 is closer to the back plate 110 than the protrusion 312, and the sum of the thicknesses of the conductive portion 311 and the protrusion 312 is the same as the thickness of the reflective sheet 400. In this way, the side of the contact portion 310 away from the light guide plate 300 can directly contact the back plate 110, so that the electrostatic charge in the light guide plate 300 can be guided to the back plate 110 through the contact portion 310 and released.

[0123] It should be noted that when the contact portion 310 includes the conductive portion 311, such as Figure 3 As shown, the conductive portion 311 may include at least one conductive adhesive layer 311a and at least one conductive material layer 311b stacked together, wherein the conductive adhesive layer 311a is bonded to the light guide plate 300 and / or the back plate 110. This application provides illustrative examples of the following two possible implementations.

[0124] In the first possible implementation, such as Figure 3 As shown, the conductive portion 311 in the backlight module 000 includes a conductive adhesive layer 311a and a conductive material layer 311b stacked together, and the conductive adhesive layer 311a is bonded to the backplate 110. For example, the conductive layer material 311b can be a conductive material such as conductive copper foil, conductive aluminum foil, conductive fiber cloth, and conductive silicone rubber.

[0125] In this way, the conductive material layer 311b in the conductive part 311 is bonded to the back plate 110 through the conductive adhesive layer 311a, making it difficult for the conductive material layer 311b to fall off from the back plate 110, and ensuring that the electrostatic charge in the light guide plate 300 can be guided to the back plate 110 through the contact part 310 and released.

[0126] In this case, during the assembly of the backlight module 000, the conductive part 311 can first be attached to the side of the backplate 110 facing the light guide plate 300, and then assembled with other structures in the backlight module 000.

[0127] Alternatively, please refer to Figure 8 , Figure 8 This is a schematic diagram of the film layer structure of a backlight module according to another embodiment of this application. The conductive part 311 in the backlight module 000 includes a conductive adhesive layer 311a and a conductive material layer 311b stacked together, and the conductive adhesive layer 311a is bonded to the light guide plate 300.

[0128] In this way, the conductive material layer 311b in the conductive part 311 is bonded to the light guide plate 300 through the conductive adhesive layer 311a, making it difficult for the conductive material layer 311b to fall off the light guide plate 300, and ensuring that the electrostatic charge in the light guide plate 300 can be guided to the back plate 110 through the contact part 310 and released.

[0129] In this case, during the assembly of the backlight module 000, the conductive part 311 can first be attached to the side of the light guide plate 300 facing the back plate 110, and then assembled with other structures in the backlight module 000.

[0130] In the second possible implementation, please refer to Figure 9 , Figure 9 This is a schematic diagram of the film layer structure of a conductive part provided in an embodiment of this application. In the case where the conductive part 311 in the backlight module 000 includes multiple conductive adhesive layers 311a and multiple conductive material layers 311b, the multiple conductive adhesive layers 311a and multiple conductive material layers 311b are arranged alternately. That is, a conductive material layer 311b is distributed between two adjacent conductive adhesive layers 311a, and a conductive adhesive layer 311a is distributed between two adjacent conductive material layers 311b. Here, the multiple conductive material layers 311b can be made of the same material or different materials; this embodiment of the application does not impose any limitations on this.

[0131] In this way, the two adjacent conductive material layers 311b in the conductive part 311 are bonded together by the conductive adhesive layer 311a. Furthermore, the two conductive adhesive layers 311a located on the uppermost and lowermost sides of the conductive part 311 are bonded to the light guide plate 300 and the back plate 110, respectively. After the backlight module 000 is subjected to an impact force, the light guide plate 300 will not shift from the back plate 110; that is, the light guide plate 300 will not shift internally within the backlight module 000, thus avoiding the possibility of the light guide plate 300 impacting the light source 200 and causing the light source 200 to fail. Moreover, neither the light guide plate 300 nor the back plate 110 is easily detached from the conductive part 311, ensuring that the electrostatic charge in the light guide plate 300 can be guided to the back plate 110 through the contact part 310 and released. Here, the example is given with the contact portion 310 including only the conductive portion 311. In other embodiments, when the contact portion 310 includes the conductive portion 311 and the protrusion 312, the uppermost conductive adhesive layer 311a of the conductive portion 311 is bonded to the protrusion 312.

[0132] In this case, during the assembly of the backlight module 000, the conductive part 311 can be first attached to the side of the light guide plate 300 facing the back plate 110, and then assembled with other structures in the backlight module 000. Alternatively, the conductive part 311 can be first attached to the side of the back plate 110 facing the light guide plate 300, and then assembled with other structures in the backlight module 000.

[0133] here, Figure 9 A conductive adhesive layer 311a is provided on both the uppermost and lowermost sides of the conductive portion 311 shown. In other embodiments, a conductive adhesive layer 311a may be provided only on the uppermost or lowermost side of the conductive portion 311. In this case, the conductive adhesive layer 311a located on the outermost side of the conductive portion 311 may be bonded to the light guide plate 300 or the back plate 110.

[0134] It should be noted that, please refer to Figure 10 , Figure 10 This is a schematic diagram of another conductive layer structure provided in an embodiment of this application. At least one conductive material layer in the contact portion 310 of the backlight module 000 may include: a buffer layer a, and a conductive material film b covering the outside of the buffer layer a. Thus, when the backplate 110 of the backlight module 000 is subjected to an impact force, the buffer layer a can reduce the probability of the light guide plate 300 being broken, thereby resulting in more uniform light emitted from the side of the light guide plate 300 away from the backplate 110.

[0135] For example, the buffer layer a can be made of foam or conductive foam. When the buffer layer a is made of conductive foam, the electrostatic charge in the light guide plate 300 is better released by being guided to the back plate 110 through the contact portion 310.

[0136] In the embodiments of this application, please refer to Figure 11 , Figure 11 This is a partially enlarged top view of a backlight module provided in an embodiment of this application. Since the light emitted from multiple light-emitting units 220 exits from the light-emitting surface of each unit 220 at a certain exit angle, there are areas of overlapping light paths between adjacent units 220, and areas where the light emitted from the units 220 cannot directly illuminate them. Therefore, the light guide plate 300 in the backlight module 000 has a light transmission area M and an auxiliary area N. The light transmission area M is used to transmit the light emitted from the light-emitting units 220 in the light source 200 to the display viewing area, and the auxiliary area N is the area in the light guide plate 300 that will not be directly illuminated by the light emitted from the light-emitting units 220 in the light source 300. It should be noted that the light in the light transmission area M may be transmitted to the auxiliary area N during transmission. Therefore, after the light emitted from the light-emitting units 220 in the light source 200, the brightness of the light transmission area M is greater than the brightness of the auxiliary area N. In this application, the brightness of the light transmission area M is much greater than the brightness of the auxiliary area N.

[0137] In this case, since the light guide plate 300 in the backlight module 000 needs to perform a series of optical path adjustments on the light emitted from the side of the light-emitting unit 220, the light emitted from the side of the light guide plate 300 away from the back plate 110 is transformed into light emitted uniformly from a plane. Therefore, in order to avoid the contact portion 310 interfering with the transmission of light inside the light guide plate 300, the orthographic projection of the contact portion 310 on the back plate 110 is located within the orthographic projection of the auxiliary partition N on the back plate 110. Thus, the contact portion 310 includes a protrusion 312 integrally formed with the light guide plate 300, or the light guide plate 300 includes, for example, a protrusion 312 integrally formed with the light guide plate 300. Figure 4 In the case of the groove O shown, the deformation design of the light guide plate 300 will not infringe on the light transmission area M, so that the uniformity of the light emitted from the side of the light guide plate 300 away from the back plate 110 is better.

[0138] Furthermore, since the reflector 400 needs to reflect the light emitted from the side of the light guide plate 300 facing the back plate 110 back to the light guide plate 300, the orthographic projection of the hollow area S of the reflector 400 on the back plate 100 needs to be located within the orthographic projection of the auxiliary partition N on the back plate 100. This ensures that the reflector 400 is present between the light guide plate 300 and the back plate 110 within the light transmission area M, preventing light rays incident on the reflector 400 in the light transmission area M from being reflected back to the light guide plate 300 and emitted from the side of the light guide plate 300 facing the optical film 500, thereby improving the light extraction efficiency of the backlight module 000.

[0139] For example, the distance between the orthographic projection of the cutout area S on the back panel 100 and the orthographic projection of the light transmission area M on the back panel 100 ranges from 0.1 mm to 0.2 mm.

[0140] It should be noted that the auxiliary partition N in the light guide plate 300 includes: two first auxiliary partitions N1 distributed on both sides of the plurality of light-emitting units 220 in the first direction x, and / or, a second auxiliary partition N2 distributed between two adjacent light-emitting units 220 in the first direction x.

[0141] For example, such as Figure 11 As shown, the auxiliary partition N in the light guide plate 300 includes two first auxiliary partitions N1 distributed on both sides of the plurality of light-emitting units 220 in the first direction x, and a second auxiliary partition N2 distributed between two adjacent light-emitting units 220 in the first direction x.

[0142] The light guide plate 300 includes multiple corner portions, including two first corner portions 320 distributed on both sides of the light source 200 in the first direction x. A first auxiliary partition N1 is distributed between the outer edge of the first corner portion 320 and the light beam emitted by the outermost light-emitting unit 220 among the multiple light-emitting units 220, and the overall extension direction of the first auxiliary partition N1 intersects the first direction x. A second auxiliary partition N2 is distributed between the boundary of the light guide plate 300 near the light source 200 and the light beams emitted by two adjacent light-emitting units 220.

[0143] In this case, the contact portion 310 has a variety of possible design methods. The embodiments of this application will be illustrated by taking the following three possible design methods as examples.

[0144] In the first possible design approach, such as Figure 11 As shown, when the auxiliary partition N includes two first auxiliary partitions N1, the contact portion 310 includes a first contact portion 310a, and the orthographic projection of the first contact portion 310a on the back plate 110 is located within the orthographic projection of the first auxiliary partition N1 on the back plate 100.

[0145] In this way, the first contact portion 310a will not encroach on the light transmission area M, resulting in better uniformity of the light emitted from the side of the light guide plate 300 away from the back plate 110. It should be noted that the first contact portion 310a may include: a conductive portion 311, and / or a protrusion 312 integrally formed with the light guide plate 300.

[0146] Please refer to the following in this application: Figure 12 , Figure 12This is a partially enlarged view of a first auxiliary partition provided in an embodiment of this application. The hollowed-out area S in the reflective sheet 400 includes a first hollowed-out area S1, and the orthographic projection of the first hollowed-out area S1 on the back plate 110 lies within the orthographic projection of the first auxiliary partition N1 on the back plate 100. In this way, it is ensured that the light rays incident on the reflective sheet 400 in the light transmission area M can be reflected back to the light guide plate 300 and emitted from the side of the light guide plate 300 toward the optical film 500, thereby improving the light extraction efficiency of the backlight module 000.

[0147] It should be noted that the shape of the orthographic projection of the first hollow area S1 on the back plate 110 is similar to the shape of the orthographic projection of the first contact portion 310a on the back plate 110, and / or the shape of the orthographic projection of the first hollow area S1 on the back plate 110 is similar to the shape of the orthographic projection of the first auxiliary partition N1 on the back plate 110.

[0148] In this application, the first hollow area S1 can have various shapes if the orthographic projection of the first hollow area S1 on the back plate 110 is located within the orthographic projection of the first auxiliary partition N1 on the back plate 110, and the orthographic projection of the first contact portion 310a on the back plate 110 is located within the orthographic projection of the first hollow area S1 on the back plate 110. Therefore, the shape of the orthographic projection of the first hollow area S1 on the back plate 110 can be designed based on the shape of the orthographic projection of the first contact portion 310a on the back plate 110; or, the shape of the orthographic projection of the first hollow area S1 on the back plate 110 can be designed based on the shape of the orthographic projection of the first auxiliary partition N1 on the back plate 110; or, if the shape of the orthographic projection of the first contact portion 310a on the back plate 110 is similar to the shape of the orthographic projection of the first auxiliary partition N1 on the back plate 110, the shape of the orthographic projection of the first hollow area S1 on the back plate 110 can be designed based on the shape of the orthographic projection of the first contact portion 310a on the back plate 110 and the shape of the orthographic projection of the first auxiliary partition N1 on the back plate 110. It should be noted that the shape of the orthographic projection of the first hollow area S1 on the back plate 110 can be arbitrarily designed under certain conditions, and the embodiments of this application do not limit this.

[0149] In one alternative embodiment, please refer to Figure 13 , Figure 13 This is a partially enlarged view of another first auxiliary partition provided in an embodiment of this application. The shape of the orthographic projection of the first hollow area S1 on the back plate 110 is similar to the shape of the orthographic projection of the first contact portion 310a on the back plate 110. However, the shape of the orthographic projection of the first hollow area S1 on the back plate 110 is not similar to the shape of the orthographic projection of the first auxiliary partition N1 on the back plate 110. Here, the shape of the orthographic projection of the first contact portion 310a on the back plate 110 is rectangular, and the direction of the long side of the rectangle is parallel to the overall extension direction of the first auxiliary partition N1.

[0150] In addition, please refer to Figure 14 , Figure 14 This is a partially enlarged view of another first auxiliary partition provided in this application embodiment. The shape of the orthographic projection of the first hollow area S1 on the back plate 110 is similar to the shape of the orthographic projection of the first contact portion 310a on the back plate 110. However, the shape of the orthographic projection of the first hollow area S1 on the back plate 110 is not similar to the shape of the orthographic projection of the first auxiliary partition N1 on the back plate 110. Here, the shape of the orthographic projection of the first contact portion 310a on the back plate 110 is an arch formed by a rounded edge and a straight edge. The direction of the straight edge of the arch is parallel to the overall extension direction of the first auxiliary partition N1, and the rounded edge of the arch is located on the side of the straight edge away from the corner portion 320.

[0151] It should be noted that when the shape of the orthographic projection of the first cutout area S1 on the back plate 110 is a more regular rectangle than the shape of the orthographic projection of the first contact portion 310a on the back plate 110, the process of forming the first cutout area S1 and the first contact portion 310a is simpler. Furthermore, if the first contact portion 310a includes a conductive portion 311, the utilization efficiency of the raw material roll for the conductive portion 311 is higher and the cost is lower.

[0152] In another alternative embodiment, such as Figure 12 As shown, the shape of the orthographic projection of the first hollow area S1 onto the back plate 110 is similar to the shape of the orthographic projection of the first auxiliary partition N1 onto the back plate 110. Furthermore, the shape of the orthographic projection of the first contact portion 310a onto the back plate 110 is similar to the shape of the orthographic projection of the first auxiliary partition N1 onto the back plate 110. Here, because the contact area between the first contact portion 310a and the back plate 110 is relatively large, the electrostatic charge in the light guide plate 300 is effectively guided to the back plate 110 and released through the contact portion 310a.

[0153] In yet another alternative embodiment, please refer to Figure 15 , Figure 15This is a partially enlarged view of another first auxiliary partition provided in this application embodiment. The shape of the orthographic projection of the first hollow area S1 on the back plate 110 is not similar to the shape of the orthographic projection of the first auxiliary partition N1 on the back plate 110. Furthermore, the shape of the orthographic projection of the first hollow area S1 on the back plate 110 is not similar to the shape of the orthographic projection of the first contact portion 310a on the back plate 110. Here, there are multiple first contact portions 310a whose orthographic projections are located within the same first auxiliary partition N1, and the shape of the orthographic projection of each first contact portion 310a on the back plate 110 is circular. Since the width of the first auxiliary partition N1 gradually decreases along the direction of light beam transmission away from the light-emitting unit 200, the area of ​​the orthographic projections of the multiple first contact portions 310a on the back plate 110 gradually decreases along the direction of light beam transmission from the light-emitting unit 200.

[0154] It should be noted that in other embodiments, the shape of the orthographic projection of each first contact portion 310a on the back plate 110 may also be square or elliptical, and this application embodiment does not limit this.

[0155] In the second possible design approach, such as Figure 11 As shown, when the auxiliary partition N includes multiple second auxiliary partitions N2, the contact portion 310 includes a second contact portion 310b, and the orthographic projection of the second contact portion 310b on the back plate 110 is located within the orthographic projection of the second auxiliary partition N2 on the back plate 100.

[0156] In this way, the second contact portion 310b will not encroach on the light transmission area M, resulting in better uniformity of the light emitted from the side of the light guide plate 300 away from the back plate 110.

[0157] Please refer to the following in this application: Figure 16 , Figure 16 This is a partially enlarged view of a second auxiliary partition provided in an embodiment of this application. The hollowed-out area S in the reflective sheet 400 includes a second hollowed-out area S2, and the orthographic projection of the second hollowed-out area S2 on the back plate 110 lies within the orthographic projection of the second auxiliary partition N2 on the back plate 110. In this way, it is ensured that the light rays incident on the reflective sheet 400 in the light transmission area M can be reflected back to the light guide plate 300 and emitted from the side of the light guide plate 300 toward the optical film 500, thereby improving the light extraction efficiency of the backlight module 000.

[0158] In this application, the second hollow area S2 is provided that its orthographic projection on the back plate 110 is within the orthographic projection of the second auxiliary partition N2 on the back plate 110, and the orthographic projection of the second contact portion 310b on the back plate 110 is within the orthographic projection of the second hollow area S2 on the back plate 110. The second contact portion 310b may include: a conductive portion 311, and / or a protrusion 312 integrally formed with the light guide plate 300. The shape of the second hollow area S2 may be various.

[0159] Here, the shape of the orthographic projection of the second hollow area S2 onto the back plate 110 can be similar to the shape of the orthographic projection of the second contact portion 310b onto the back plate 110. Furthermore, the shape of the orthographic projection of the second hollow area S2 onto the back plate 110 can be similar to the shape of the orthographic projection of the second auxiliary partition N2 onto the back plate 110. For example, as... Figure 16 As shown, the orthographic projection of the second hollow area S2 on the back plate 110, the orthographic projection of the second contact portion 310b on the back plate 110, and the orthographic projection of the second auxiliary partition N2 on the back plate 110 are all triangular.

[0160] It should be noted that, please refer to Figure 17 , Figure 17 This is a partially enlarged view of another second auxiliary partition provided in an embodiment of this application. The shape of the orthographic projection of the second hollow area S2 on the back plate 110 may also be dissimilar to the shape of the orthographic projection of the second auxiliary partition N2 on the back plate 110. Here, the shape of the orthographic projection of the second contact portion 310b on the back plate 110 and the shape of the orthographic projection of the second hollow area S2 on the back plate 110 are both arches composed of rounded edges and straight edges, while the shape of the orthographic projection of the second auxiliary partition N2 on the back plate 110 is a triangle.

[0161] It should also be noted that the distance between the boundary of the orthographic projection of the second hollow area S2 on the back plate 110 and the boundary of the orthographic projection of the second contact portion 310b on the back plate 110 ranges from 0.05 mm to 0.15 mm. Furthermore, the distance between the boundary of the orthographic projection of the second hollow area S2 on the back plate 110 and the boundary of the orthographic projection of the second auxiliary partition N2 on the back plate 110 ranges from 0.1 mm to 0.2 mm.

[0162] In the embodiments of this application, such as Figure 17As shown, the backlight module 000 may further include an auxiliary contact portion 600. The auxiliary contact portion 600 is fixedly connected to the second contact portion 310b, and the auxiliary contact portion 600 and the second contact portion 310b are an integral structure. That is, when the second contact portion 310b is a conductive portion 311, the auxiliary connecting portion 600 is an auxiliary conductive portion connected to the conductive portion 311, and the conductive portion 311 can be integrally connected to the auxiliary conductive portion. When the second contact portion 310b is a protrusion 312, the auxiliary connecting portion 600 is an auxiliary protrusion connected to the protrusion 312, and the protrusion 312 can be integrally connected to the auxiliary protrusion. When the second contact portion 310b is a combination of the conductive portion 311 and the protrusion 312, the auxiliary connecting portion 600 is a combination of the auxiliary conductive portion and the auxiliary protrusion, and the conductive portion 311 can be integrally connected to the auxiliary conductive portion, and the protrusion 312 can be integrally connected to the auxiliary protrusion.

[0163] Furthermore, the reflector 400 also has an auxiliary cutout area S3, the orthographic projection of which onto the back plate 100 lies at least between the orthographic projections of two adjacent light-emitting units 200 onto the back plate 110. The orthographic projection of the auxiliary contact portion 600 onto the back plate 110 lies within the orthographic projection of the auxiliary cutout area S3 onto the back plate 100. In this way, the auxiliary contact portion 600 can be placed within the auxiliary cutout area S3 and in contact with the back plate 110, allowing electrostatic charges conducted from the light guide plate 300 to the contact portion 310 to be conducted to the auxiliary contact portion 600, and then guided to the back plate 110 for release, effectively increasing the efficiency of electrostatic charge release.

[0164] It should be noted that the outer frame 120 in the frame 100 has multiple possible configurations, and in different configurations, the second contact portion 310b and the auxiliary cutout area S3 have different design methods. This application embodiment illustrates this with the following two possible configurations as examples.

[0165] In the first possible scenario, please refer to Figure 17 , Figure 18 and Figure 19 , Figure 18 This is a partial enlarged view of another second auxiliary partition provided in the embodiments of this application. Figure 19 yes Figure 18 A schematic diagram of the film structure at B-B'. No baffle is provided on the side of the outer frame 120 adjacent to the light source 200 facing the light source 200. In this case, the auxiliary contact portion 600 in the backlight module 000 is distributed between at least two connected light-emitting units 220 in the first direction x.

[0166] It should be noted that when the second contact portion 310b is a protrusion 312 and the auxiliary connection portion 600 is an auxiliary protrusion connected to the protrusion 312, it is necessary to ensure that the orthographic projection of the auxiliary contact portion 600 on the back plate 110 does not overlap with the orthographic projection of the light-emitting unit 220 on the back plate 110, so as to avoid interference between the auxiliary contact portion 600 and the light-emitting unit 220 during the assembly of the backlight module 000.

[0167] When the second contact portion 310b is a conductive portion 311 and the auxiliary connection portion 600 is an auxiliary conductive portion connected to the conductive portion 311, such as Figure 17 and Figure 18 As shown, the orthographic projection of the auxiliary contact portion 600 on the back plate 110 overlaps with the orthographic projections of two adjacent light-emitting units 200 on the back plate 110. Here, the portion of the auxiliary contact portion 600 that overlaps with the light-emitting unit 200 can be distributed within the gap between the light-emitting unit 200 and the back plate 100, thereby preventing interference between the auxiliary contact portion 600 and the light-emitting unit 220 during the assembly of the backlight module 000. Furthermore, the shapes of the orthographic projections of the second contact portion 310b and the auxiliary contact portion 600 on the back plate 110 can be set to different shapes, for example, such as... Figure 17 and Figure 18 As shown, the orthographic projections of the second contact portion 310b and the auxiliary contact portion 600 onto the back plate 110 can be circular, triangular, or circular.

[0168] It should be noted that the second contact portion 310b may also include a conductive portion 311 and a protrusion 312. In this case, it is also necessary to ensure that the orthographic projection of the auxiliary contact portion 600 on the back plate 110 does not overlap with the orthographic projection of the light-emitting unit 220 on the back plate 110.

[0169] In the second possible scenario, please refer to... Figure 20 and Figure 21 , Figure 20 This is a partial enlarged view of another second auxiliary partition provided in the embodiments of this application. Figure 21 yes Figure 20A schematic diagram of the film structure at C-C'. A first baffle 700 is provided on the side of the outer frame 120 adjacent to the light source 200, facing the light source 200. The first baffle 700 is fixedly connected to the outer frame 120 and is an integral structure with the outer frame 120. In this case, the orthographic projection of the auxiliary contact portion 600 in the backlight module 000 onto the back plate 110 lies between the orthographic projection of the first baffle 700 onto the back plate 110 and the orthographic projection of the light guide plate 300 onto the back plate 110. Since the auxiliary contact portion 600 needs to be provided between the outer surfaces of the first baffle 700 and the light guide plate 300, the vertical distance between the first baffle 700 and the light-emitting surface of the light-emitting unit 220 needs to be large, so that there is sufficient space between the outer surfaces of the first baffle 700 and the light guide plate 300 to arrange the auxiliary contact portion 600. That is, the extension length of the first baffle 700 is small.

[0170] The shapes of the second contact portion 310b and the auxiliary contact portion 600 projected onto the back plate 110 can be set to different shapes. For example, such as Figure 20 As shown, the shapes of the orthographic projections of the second contact portion 310b and the auxiliary contact portion 600 onto the back plate 110 can be circular, elliptical, or rhomboid, etc.

[0171] It should be noted that, as Figure 16 As shown, when the orthographic projection of the second hollow area S2 on the back plate 110 is entirely located on the orthographic projection of the second auxiliary partition N2 on the back plate 110, and when the backlight module 000 does not have an auxiliary contact portion 600, a second baffle 800 is provided on the side of the outer frame 120 adjacent to the light source 200 facing the light source 200. The second baffle 800 is fixedly connected to the outer frame 120, and the second baffle 800 and the outer frame 120 are an integral structure. Because the backlight module 000 does not include the auxiliary contact portion 600, the vertical distance between the second baffle 800 and the light-emitting surface of the light-emitting unit 220 is small. That is, the extension length of the second baffle 800 is large.

[0172] It should also be noted that the above embodiments are all illustrated using the example of a second contact portion being provided within the second auxiliary partition. In other possible implementations, a second contact portion may not be provided within the second auxiliary partition; instead, an auxiliary contact portion may be provided directly. For examples, please refer to [link to example]. Figure 22 and Figure 23 , Figure 22 This is a partially enlarged view of a second auxiliary partition provided in another embodiment of this application. Figure 23 yes Figure 22A schematic diagram of the film structure at point D-D'. An auxiliary contact portion 600, integrally formed with the light guide plate 300, can be directly provided on its side surface. The orthographic projection of the auxiliary contact portion 600 on the back plate 100 is positioned within the orthographic projection of the auxiliary cutout area S3 of the reflective sheet 400 on the back plate 100, allowing the auxiliary contact portion 600 to contact the back plate 100 through the auxiliary cutout area S3. In this case, since the second contact portion 310b does not need to be provided on the light guide plate 300, the second cutout area S2 also does not need to be provided on the reflective sheet 400. Therefore, the reflective sheet 400 does not need to avoid the second contact portion 310b, simplifying the processing technology of the reflective sheet 400. Here, as... Figure 22 As shown, the orthographic projection of the auxiliary contact portion 600 onto the back plate 110 can be an arch shape composed of a rounded edge and a straight edge. Of course, the orthographic projection of the auxiliary contact portion 600 onto the back plate 110 can also be other shapes, such as a rectangle or a trapezoid.

[0173] In the third possible design approach, such as Figure 11 As shown, when the auxiliary partition N includes two first auxiliary partitions N1 and multiple second auxiliary partitions N2, the contact portion 310 includes a first contact portion 310a and a second contact portion 310b. The orthographic projection of the first contact portion 310a on the back panel 110 lies within the orthographic projection of the first auxiliary partition N1 on the back panel 100, and the orthographic projection of the second contact portion 310b on the back panel 110 lies within the orthographic projection of the second auxiliary partition N2 on the back panel 100. The design schemes of the first contact portion 310a and the second contact portion 310b are as shown in the above embodiment and will not be repeated here.

[0174] In the embodiments of this application, such as Figure 23 As shown, the backlight module 000 also includes a light-absorbing strip G, which is located on the side of the optical film 500 away from the back plate 110. It can be used to prevent light from leaking out of the backlight module 000. After the backlight module 000 is assembled into the liquid crystal display device, there will be no light leakage at the edge of the liquid crystal display device.

[0175] In summary, the backlight module provided in this application includes a frame, and a side-lit light source, a light guide plate, and a reflector located within the frame. The light guide plate can contact the backplate through a contact portion and a cutout area of ​​the reflector, allowing electrostatic charges in the light guide plate to be guided to and released through the contact portion onto the backplate. Thus, even if a periodically changing electric field is formed between the touch LCD panel and the backplate in the backlight module, because the electrostatic charges in the light guide plate have been released through the contact portion, the light guide plate will not undergo periodically changing deformation under the influence of the periodically changing electric field force, the light guide plate will not vibrate, and the backlight module will not emit a whistling sound.

[0176] This application also provides a display device, please refer to... Figure 24 , Figure 24 This is a schematic diagram of the film layer structure of a display device according to an embodiment of this application. The display device 002 includes a backlight module 000 and a liquid crystal display panel 001 located on the light-emitting side of the backlight module. The display device 002 can be any product or component with display function, such as electronic paper, mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator. The backlight module is... Figures 1 to 23 The backlight module shown is 000.

[0177] The display device 0000 may further include a light-shielding tape 002 for bonding the backlight module 000 and the liquid crystal display panel 001. Exemplarily, one side of the light-shielding tape 002 may be bonded to the side of the outer frame of the backlight module 000 facing away from the back panel, and the light-shielding tape 002 may be loop-shaped, surrounding the outer edge of the backlight module 000. The side of the light-shielding tape 002 facing away from the backlight module 000 may be bonded to the edge portion of the liquid crystal display panel 001. Here, the light-shielding tape 002 can be used to prevent light leakage from the display device 002, so that no light leakage occurs at the edges of the liquid crystal display device.

[0178] This application also provides a liquid crystal display panel, please refer to... Figure 25 , Figure 25 This is a schematic diagram of the film layer structure of a liquid crystal display panel provided in an embodiment of this application. The liquid crystal display panel 001 in the display device includes: an array substrate 900, a color filter substrate 1000, a first polarizer 1100, and a conductive adhesive portion 1300.

[0179] In the liquid crystal display panel 001, the array substrate 900 and the color filter substrate 1000 are disposed opposite to each other, and the portion of the array substrate 900 protruding from the color filter substrate 1000 is called the substrate protrusion 910. It should be noted that the liquid crystal display panel 001 may further include a liquid crystal layer located between the array substrate 900 and the color filter substrate 100. Figure 25 (Not shown in the drawing).

[0180] In the liquid crystal display panel 001, the first polarizer 1100 is located on the side of the color filter substrate 1000 opposite to the array substrate 900, and the portion of the first polarizer 1100 protruding from the color filter substrate 1000 is a polarizing protrusion 1110. Here, the first polarizer 1100 can be a conductive polarizer doped with conductive particles. It should be noted that the liquid crystal display panel 001 may further include a second polarizer 1700 located on the side of the array substrate 900 opposite to the color filter substrate 1000. The polarization direction of the first polarizer 1100 may be perpendicular to the polarization direction of the second polarizer 1700.

[0181] It should be noted that the outer surface of the first polarizer 1100 can be flush with, recessed, or protruding relative to the outer surface of the array substrate 900. Here, when the outer surface of the first polarizer 1100 protrudes relative to the outer surface of the array substrate 900, the shape of the backlight module 000 needs to be considered to avoid assembly interference during the assembly of the liquid crystal display panel 001 and the backlight module 000.

[0182] The substrate protrusion 910 in the liquid crystal display panel 001 has a ground electrode 911 on the side facing the first polarizer 1100, and the orthogonal projection of the ground electrode 911 on the first polarizer 1100 overlaps with the area where the polarizing protrusion 1110 is located.

[0183] The conductive adhesive portion 1300 in the liquid crystal display panel 001 is located between the substrate protrusion 910 and the polarizing protrusion 1110, and the two sides of the conductive adhesive portion 1300 that are disposed opposite to each other are in direct contact with the ground electrode 911 and the polarizing protrusion 1110, respectively. The conductive adhesive portion 1300 can have the same shape as the conductive portion 311 in the above embodiment; therefore, the structure of the conductive adhesive layer 1300 can refer to the conductive portion 311 in the above embodiment. Further details are omitted here.

[0184] It should be noted that the conductive adhesive portion 1300 can be used to support the polarizing protrusion 1110, and since the conductive adhesive portion 1300 can have a certain buffering capacity, when the outer side of the liquid crystal display panel 001 is subjected to an impact force, the conductive adhesive portion 1300 can protect the substrate protrusion 910.

[0185] It should also be noted that the liquid crystal display panel 001 may further include a protective cover plate 1200. The protective cover plate 1200 is located on the side of the first polarizer 1100 opposite to the color filter substrate 1000. When the light-emitting side of the liquid crystal display panel 001 is subjected to an impact force, the protective cover plate 1200 can protect the liquid crystal display panel 001.

[0186] Please refer to this. Figure 26 , Figure 26This is a schematic diagram of the film layer structure of a liquid crystal display panel using silicone adhesive for buffer protection. In traditional silicone adhesive buffer protection solutions, since the liquid crystal display panel in the conventional solution does not have a polarizing protrusion, the silicone adhesive is located between the substrate protrusion 910 and the protective cover plate. Because the silicone adhesive is in a highly fluid paste state before curing, it spreads and levels itself, resulting in a shape that is wider at the bottom and narrower at the top after curing. In this case, the greater the required coating thickness of the silicone adhesive, the wider the bottom width of the silicone adhesive will be, which is not conducive to narrowing the bezel. Furthermore, in the narrow bezel design, the available coating width becomes smaller, and the height of the silicone adhesive cannot reach the required height, thus failing to make contact with the protective cover plate 1200, or the top of the silicone adhesive only makes very small point contact with the protective cover plate 1200, affecting its buffer absorption effect and failing to effectively prevent the substrate protrusion 910 from breaking. In addition, silicone sealant will release silicone oil, which will evaporate and diffuse along the protective cover plate 1200 to the ink surface, contaminating the ink surface and affecting the adhesive performance of the ink, thus causing the entire machine to fail.

[0187] Therefore, the conductive adhesive portion 1300 used in this application to buffer and protect the substrate protrusion 910 has a better buffering effect and is conducive to achieving a narrower bezel.

[0188] In this application, the protective cover 1200 of the liquid crystal display panel 001 is covered with electrostatic charges from the outside. These electrostatic charges can move and diffuse along the surface of the protective cover 1200 to the conductive first polarizer 1100. Since the conductive adhesive portion 1300 is directly in contact with the ground electrode 911 and the polarizing protrusion 1110 on its opposite sides, the electrostatic charges in the first polarizer 1100 can be conducted and diffused to the ground electrode 911 through the conductive adhesive portion 1300 and released.

[0189] In this way, the electrostatic charge in the first polarizer 1100 will not diffuse into the color filter substrate 1000, and a large amount of electrostatic charge will not accumulate in the color filter substrate 1000. This effectively avoids the possibility that the electrostatic field generated by the electrostatic charge in the color filter substrate 1000 will interfere with the electric field of the liquid crystal molecules inside the liquid crystal display panel 001, thereby making the display effect of the liquid crystal display panel 001 better.

[0190] In summary, the liquid crystal display panel in the display device provided in this application includes: an array substrate, a color filter substrate, a first polarizer, a protective cover plate, and a conductive adhesive portion. The protective cover plate is distributed with electrostatic charges from the outside environment. These electrostatic charges can move and diffuse along the surface of the protective cover plate into the conductive first polarizer. Since the two sides of the conductive adhesive portion are respectively in direct contact with the ground electrode and the polarizing protrusion, the electrostatic charges in the first polarizer can be conducted and diffused to the ground electrode through the conductive adhesive portion and released. In this way, the electrostatic charges in the first polarizer will not diffuse into the color filter substrate, and a large amount of electrostatic charge will not accumulate in the color filter substrate. This effectively avoids the possibility of the electrostatic field generated by the electrostatic charges in the color filter substrate interfering with the electric field of the liquid crystal molecules inside the liquid crystal display panel, thereby resulting in a better display effect of the liquid crystal display panel.

[0191] In the embodiments of this application, please refer to Figure 27 , Figure 27 This is a top view of a liquid crystal display panel provided in an embodiment of this application. The orthographic projection of the conductive adhesive portion 1300 on the array substrate 900 covers the area where the ground electrode 911 is located, so that the contact area between the conductive adhesive portion 1300 and the ground electrode 911 is maximized, and the electrostatic charge in the first polarizer 1100 is guided to the ground electrode 911 and released with high efficiency through the conductive adhesive portion 1300.

[0192] It should be noted that after the conductive adhesive portion 1300 is attached to the substrate protrusion 910 and the polarizing protrusion 1110 on both sides, the electrostatic discharge effect of the conductive adhesive portion 1300 needs to be tested to ensure that the electrostatic charge in the first polarizer 1100 can be conducted to the grounding electrode 911 through the conductive adhesive portion 1300 and released.

[0193] In this configuration, the polarizing protrusion 1110 has a first window region V1, and the orthographic projection of the first window region V1 onto the array substrate 900 overlaps with the orthographic projection of the conductive adhesive portion 1300 onto the array substrate 900. For example, the orthographic projection of the first window region V1 onto the array substrate 900 may lie within the orthographic projection of the conductive adhesive portion 1300 onto the array substrate 900. Thus, the detection device can directly contact the conductive adhesive portion 1300 through the first window region V1 to detect the electrostatic conductivity effect of the conductive adhesive portion 1300. For example, the probe of the detection device can directly contact the conductive adhesive portion 1300 through the first window region V1 to obtain the impedance value of the conductive adhesive portion 1300. When the impedance value of the conductive adhesive portion 1300 is low, the electrostatic conductivity effect of the conductive adhesive portion 1300 is good. For example, when the impedance value of the conductive adhesive portion 1300 is less than 10KΩ, the electrostatic conductivity effect of the conductive adhesive portion 1300 is good.

[0194] In the embodiments of this application, please refer to Figure 27 and Figure 28 , Figure 28 yes Figure 27 A schematic diagram of the membrane structure at E-E'. It should be noted that... Figure 25 It can be Figure 27 A schematic diagram of the film structure at F-F'. The side of the substrate protrusion 910 facing the protective cover plate 1200 may also have multiple functional electrodes 1400, and the orthogonal projection of the polarizing protrusion 1110 on the array substrate 900 overlaps with the area where the multiple functional electrodes 1400 are located.

[0195] It should be noted that the multiple functional electrodes 1400 can serve as test nodes to detect the performance of the circuits on the array substrate 900. During the fabrication of the array substrate 900, these functional electrodes 1400 can be connected to a testing device to verify the correctness of the circuits fabricated within the array substrate 900 by measuring the electrical performance of the circuits.

[0196] It should also be noted that the orthographic projections of the multiple functional electrodes 1400 on the protective cover 1200 do not overlap with the orthographic projections of the conductive adhesive portion 1300 on the protective cover 1200. This effectively prevents the conductive adhesive portion 1300 from contacting the functional electrodes 1400 during the process of maximizing the size of the conductive adhesive portion 1300, thus avoiding any impact on the performance of the circuitry on the array substrate 900. For example, as... Figure 27 As shown, the distance d between the functional electrode 1400 closest to the conductive adhesive portion 1300 and the conductive adhesive portion 1300 among the multiple functional electrodes 1400 is 0.25 mm. The conductive adhesive portion 1300 is in contact with the outer side of the color filter substrate 1000. The shape of the conductive adhesive portion 1300 away from the outer side of the color filter substrate 1000, and the shape of the conductive adhesive portion 1300 away from the outer sides of the multiple functional electrodes 1400, can be designed to mimic the shape of the array substrate 900. In this case, the distance between these two outer sides of the conductive adhesive portion 1300 and the outer side of the array substrate 900 is 0.15 mm.

[0197] In this case, such as Figure 27 As shown, the liquid crystal display panel 001 may further include an insulating adhesive portion 1500 located between the substrate protrusion 910 and the polarizing protrusion 1200. The orthographic projection of the insulating adhesive portion 1500 onto the array substrate 900 covers the area where the plurality of functional electrodes 1400 are located. Here, because the insulating adhesive portion 1500 is insulating, short circuits between the plurality of functional electrodes 1400 in contact with the insulating adhesive portion 1500 can be effectively avoided, thereby preventing any impact on the performance of the circuits on the array substrate 900.

[0198] Please refer to this application. Figure 29 , Figure 29 This is a schematic diagram of the film structure of an insulating adhesive portion according to an embodiment of this application. The insulating adhesive portion 1500 includes at least one layer of insulating adhesive 1510 and at least one layer of insulating buffer 1520 stacked together.

[0199] For example, the insulating buffer layer 1520 can be made of a cushioning material such as foam, PET, EVA, or silicone rubber. In this way, when the edge of the liquid crystal display panel 001 is subjected to an impact force, the buffer layer 1520 can reduce the damage to the substrate protrusion 910 in the array substrate 900, thereby improving the reliability of the liquid crystal display panel 001.

[0200] In this part, the insulating buffer layer 1520 in the insulating adhesive part 1500 is bonded to the substrate protrusion 910 or the polarizing protrusion 1110 by the insulating adhesive layer 1510, so that the insulating buffer layer 1520 is not easy to fall off from the substrate protrusion 910 or the polarizing protrusion 1110, and the insulating adhesive part 1500 is prevented from being displaced in the liquid crystal display panel 001.

[0201] Please refer to Figure 30 , Figure 30 This is a schematic diagram of another insulating adhesive layer structure provided in an embodiment of this application. In the case where the insulating adhesive layer 1500 in the liquid crystal display panel 001 includes multiple insulating adhesive layers 1510 and multiple insulating buffer layers 1520, the multiple insulating adhesive layers 1510 and multiple insulating buffer layers 1520 are arranged alternately. That is, an insulating buffer layer 1520 is distributed between two adjacent insulating adhesive layers 1510, and an insulating adhesive layer 1510 is distributed between two adjacent insulating buffer layers 1520. Here, the multiple insulating buffer layers 1520 can be made of the same material or different materials; this embodiment of the application does not limit this.

[0202] In this way, the two adjacent insulating buffer layers 1520 in the insulating adhesive portion 1500 are bonded together by the insulating adhesive layer 1510, and the two outermost insulating adhesive layers 1510 in the insulating adhesive portion 1500 are bonded to the substrate protrusion 910 and the polarizing protrusion 1110 respectively. After the liquid crystal display panel 001 is subjected to an impact force, the insulating adhesive portion 1500 will not shift inside the liquid crystal display panel 001. Here, the case where the insulating adhesive layer 1510 is distributed on both the uppermost and lowermost sides of the insulating adhesive portion 1500 is described as an example. In other embodiments, the insulating adhesive portion 1500, which includes multiple insulating adhesive layers 1510 and insulating buffer layers 1520, has a single insulating adhesive layer 1510 distributed on its uppermost or lowermost side. This insulating adhesive layer 1510 can be bonded to the substrate protrusion 910 or the polarizing protrusion 1110.

[0203] In the embodiments of this application, such as Figure 27 As shown, the substrate protrusion 910 also has an alignment mark 1600 on the side facing the first polarizer 1100. The area where the alignment mark 1600 is located lies between the orthographic projection of the conductive adhesive portion 1300 on the array substrate 900 and the orthographic projection of the insulating adhesive portion 1500 on the array substrate 900. This ensures that the alignment mark 1600 is not covered by either the conductive adhesive portion 1300 or the insulating adhesive portion 1500. During the assembly of the liquid crystal display panel 001 and the bonding process between the liquid crystal display panel 001 and the backlight module, the alignment mark 1600 provides a measurement reference. By comparing it with the design specifications, it can be determined whether errors or displacements have occurred during the assembly of the display device, allowing for timely adjustments.

[0204] In this configuration, the polarizing protrusion 1110 may also have a second window area V2, and the orthographic projection of the second window area V2 onto the array substrate 900 covers the area where the alignment mark 1600 is located. This improves the bonding accuracy between the liquid crystal display panel 001 and the backlight module, and the bonding accuracy of the driver chip, thereby enhancing the reliability of the display device during the bonding process of the liquid crystal display panel 001 to the backlight module and the bonding accuracy of the driver chip onto the array substrate 900.

[0205] In the embodiments of this application, please refer to Figure 27 and Figure 31 , Figure 31 This is a partially enlarged top view of a liquid crystal display panel provided in an embodiment of this application. The first window area V1 can be an opening of different shapes. For example, the shape of the first window area V1 can be circular, square, rectangular, triangular, etc. Furthermore, the first window area V1 can be connected to the outer edge of the polarizing protrusion 1110, or the first window area V1 can be spaced apart from the outer edge of the polarizing protrusion 1110.

[0206] For example, such as Figure 27 As shown, the first window area V1 is circular in shape, and the first window area V1 is spaced apart from the outer edge of the polarizing protrusion 1110; as Figure 31 As shown, the first window area V1 is square in shape and is connected to the outer edge of the polarizing protrusion 1110. It should be noted that the size and number of the first window areas V1 are not limited in this application.

[0207] Similarly, please refer to Figure 27 , Figure 31 , Figure 32 and Figure 33 , Figure 32 This is a partially enlarged top view of another liquid crystal display panel provided in an embodiment of this application. Figure 33This is a partially enlarged top view of another liquid crystal display panel provided in this application embodiment. The second window area V2 can be an opening of different shapes. For example, the shape of the second window area V2 can be circular, square, rectangular, triangular, etc. Furthermore, the second window area V2 can be connected to the outer edge of the polarizing protrusion 1110, or the second window area V2 can be spaced apart from the outer edge of the polarizing protrusion 1110.

[0208] For example, such as Figure 27 As shown, the second window area V2 is circular in shape, and the second window area V2 is spaced apart from the outer edge of the polarizing protrusion 1110; as Figure 31 As shown, the second window area V2 is square in shape, and the second window area V2 is spaced apart from the outer edge of the polarizing protrusion 1110; as Figure 32 As shown, the second window area V2 is square in shape, and the second window area V2 is connected to the outer edge of the first polarizer 1100; as Figure 33 As shown, the second window area V2 is shaped like a capsule, consisting of arcs and straight lines, and is spaced apart from the outer edge of the first polarizer 1100. It should be noted that this application does not limit the size or number of the second window areas V2.

[0209] It should be noted that when the polarizing protrusion 1110 simultaneously has a first window area V1 and a second window area 1130, such as Figure 32 and Figure 33 As shown, the first window area V1 can be connected to the second window area V2, or, as... Figure 27 and Figure 31 As shown, the first window area V1 can be separated from the second window area V2, meaning that the orthographic projection of the first window area V1 on the protective cover plate 1200 does not overlap with the orthographic projection of the second window area V2 on the protective cover plate 1200. This embodiment does not impose any limitations on this.

[0210] In the embodiments of this application, such as Figure 27 As shown, the polarizing protrusion 1110 has a cutout clearance area 1140. The substrate protrusion 910 also has a plurality of bonding electrodes 912 on the side facing the polarizing protrusion 1110, which are used for bonding and connecting with a driving assembly. Here, the driving assembly may include a driving chip IC and a flexible circuit board. For example, as... Figure 27 As shown, the substrate protrusion 910 has three sets of bonding electrodes 912 on the side facing the protective cover. One set of bonding electrodes 912 near the edge of the polarizing protrusion 1110 can be used to bond with the flexible circuit board, and the other two sets of bonding electrodes 912 located on both sides of the driver chip IC can be used to bond with the driver chip IC.

[0211] In this design, the orthogonal projection of the cutout avoidance area 1140 onto the array substrate 900 covers the area where multiple bonding electrodes 912 are located. This effectively prevents assembly interference during the assembly of the liquid crystal display panel 001. For example, as shown... Figure 27 As shown, the distance D between the boundary of the orthographic projection of the bonding electrode 912 on the protective cover plate 1200 and the boundary of the orthographic projection of the hollowed-out clearance area 1140 on the protective cover plate 1200 ranges from 0.5 mm to 1.5 mm.

[0212] It should be noted that, please refer to Figure 34 and Figure 35 , Figure 34 This is a schematic diagram showing the use of silver paste to connect the first polarizer and the ground electrode. Figure 35 This is a top view of the chip bonding area provided in an embodiment of this application. In the conventional scheme of connecting the first polarizer 1100 and the ground electrode 1200 using a silver paste coating process, in a high-temperature and high-humidity environment, the silver paste absorbs water and forms a chemical solution with the organic solvents in its formulation components. This chemical solution decomposes the functional layers of the polarizer and the crosslinking agent of the interlayer adhesive, causing silver ions to gradually penetrate from the edge of the polarizer into the display area as the layers deepen. Furthermore, the temperature of the heating contacts of the bonding equipment is high during the bonding process of the driver chip IC. Therefore, the distance L1 between the edge of the first polarizer 1100 and the edge of the display area AA is relatively large to ensure that the silver paste does not encroach on the display area AA of the first polarizer 1100. Additionally, the adhesion tolerance of the first polarizer 1100 needs to be considered, further increasing the distance L1 between the edge of the first polarizer 1100 and the edge of the display area AA.

[0213] Furthermore, in the conventional silver paste coating scheme, the distance L2 between the edge of the first polarizer 1100 and the edge of the color filter substrate 1000 and the width of the silver paste coating are related to the attachment tolerance of the first polarizer 1100.

[0214] In this application, the edge of the first polarizer 1100 does not protrude beyond the color filter substrate 1000 in the cutout avoidance area 1140. The distance L1 between the edge of the first polarizer 1100 and the edge of the display area AA only needs to consider the attachment tolerance of the first polarizer 1100; and the distance L2 between the edge of the first polarizer 1100 and the edge of the color filter substrate 1000 only needs to consider the attachment tolerance of the first polarizer 1100. Therefore, on the side where the driving component is bonded to the liquid crystal display panel 001, since the distance L1 between the edge of the first polarizer 1100 and the edge of the display area AA, and the distance L2 between the edge of the first polarizer 1100 and the edge of the color filter substrate 1000 are both smaller, the distance L between the edge of the display area AA and the edge of the array substrate 900 is smaller, resulting in a smaller bezel of the liquid crystal display panel 001, which is beneficial for achieving an ultra-narrow bezel design.

[0215] It should be noted that in the traditional silver paste coating scheme, the silver paste only contacts the outer surface of the first polarizer 1100. However, in this scheme, the conductive adhesive part 1300 can contact the side of the polarizing protrusion 1110 in the first polarizer 1100 that is away from the protective cover plate 1200. The contact area between the conductive adhesive part 1300 and the first polarizer 1100 is larger, and the electrostatic conduction effect is better.

[0216] It should also be noted that, such as Figure 27 As shown, except for the area where the alignment mark 1600 is provided and the area bound to the driving component, the conductive adhesive portion 1300 and the insulating adhesive portion 1500 can cover other areas in the substrate protrusion 910. Thus, when the edge of the liquid crystal display panel 001 is subjected to an impact force, the conductive adhesive portion 1300 and the insulating adhesive portion 1500 can effectively reduce damage to the substrate protrusion 910 by providing cushioning. Furthermore, the conductive adhesive portion 1300 and the insulating adhesive portion 1500 protect a large area, effectively improving the reliability of the liquid crystal display panel 001.

[0217] In summary, the liquid crystal display panel in the display device provided in this application includes: an array substrate, a color filter substrate, a first polarizer, a protective cover plate, and a conductive adhesive portion. The protective cover plate is distributed with electrostatic charges from the outside environment. These electrostatic charges can move and diffuse along the surface of the protective cover plate into the conductive first polarizer. Since the two sides of the conductive adhesive portion are respectively in direct contact with the ground electrode and the polarizing protrusion, the electrostatic charges in the first polarizer can be conducted and diffused to the ground electrode through the conductive adhesive portion and released. In this way, the electrostatic charges in the first polarizer will not diffuse into the color filter substrate, and a large amount of electrostatic charge will not accumulate in the color filter substrate. This effectively avoids the possibility of the electrostatic field generated by the electrostatic charges in the color filter substrate interfering with the electric field of the liquid crystal molecules inside the liquid crystal display panel, thereby resulting in a better display effect of the liquid crystal display panel.

[0218] It should be noted that the dimensions of layers and regions may be exaggerated in the accompanying drawings for clarity. Furthermore, it is understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element, or there may be intermediate layers. Additionally, it is understood that when an element or layer is referred to as being "below" another element or layer, it can be directly below the other element, or there may be more than one intermediate layer or element. Furthermore, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it can be the only layer between the two layers or two elements, or there may be more than one intermediate layer or element. Similar reference numerals throughout indicate similar elements.

[0219] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0220] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A backlight module, characterized in that, include: The frame, and the side-entry light source, light guide plate and reflector located within the frame; The frame includes: a back plate that is conductive; The light-emitting surface of the light source faces the side of the light guide plate, and the side of the light guide plate facing the back plate has a contact portion, which contacts the back plate. The reflective sheet is located between the light guide plate and the back plate, and the reflective sheet has a hollow area; The orthographic projection of the contact portion on the back plate is located within the orthographic projection of the hollowed-out area on the back plate.

2. The backlight module according to claim 1, characterized in that, The contact portion includes at least a conductive portion; the conductive portion includes at least one layer of conductive adhesive and at least one layer of conductive material, and the conductive adhesive layer is bonded to the light guide plate and / or the back plate.

3. The backlight module according to claim 2, characterized in that, The conductive part includes multiple layers of the conductive adhesive layer and multiple layers of the conductive material layer, which are arranged alternately.

4. The backlight module according to claim 2, characterized in that, At least one conductive material layer in the conductive portion includes: a buffer layer, and a conductive material film covering the outside of the buffer layer.

5. The backlight module according to claim 2, characterized in that, The thickness of the conductive part is the same as the thickness of the reflective sheet; Alternatively, the light guide plate may have a groove on the side facing the back plate, a portion of the conductive part being located within the groove, and the thickness of the conductive part being equal to the sum of the depth of the groove and the thickness of the reflective sheet.

6. The backlight module according to claim 1, characterized in that, The contact portion includes at least a protrusion; the protrusion is integrally formed with the light guide plate.

7. The backlight module according to claim 1, characterized in that, The contact portion includes: a conductive portion and a protrusion disposed in layers; the protrusion is integrally formed with the light guide plate, and the conductive portion is closer to the back plate than the protrusion.

8. The backlight module according to any one of claims 1 to 7, characterized in that, The light guide plate has a light transmission area and an auxiliary area; the light transmission area is used to transmit the light emitted by the light source; and after the light is emitted by the light source, the brightness of the light transmission area is greater than the brightness of the auxiliary area. Wherein, the orthographic projection of the contact portion on the back plate is located within the orthographic projection of the auxiliary partition on the back plate.

9. The backlight module according to claim 8, characterized in that, The orthographic projection of the hollowed-out area on the back panel is located within the orthographic projection of the auxiliary partition on the back panel.

10. The backlight module according to claim 9, characterized in that, The light source includes: a strip-shaped circuit board, and a plurality of light-emitting units located on one side of the circuit board; the extension direction of the circuit board is parallel to a first direction, and the plurality of light-emitting units are arranged along the first direction; The auxiliary partitions include: two first auxiliary partitions distributed on both sides of the plurality of light-emitting units in the first direction, and / or, a second auxiliary partition distributed between two adjacent light-emitting units in the first direction.

11. The backlight module according to claim 10, characterized in that, When the auxiliary partition includes two first auxiliary partitions, the contact portion includes a first contact portion, and the orthographic projection of the first contact portion on the back panel is located within the orthographic projection of the first auxiliary partition on the back panel. The light guide plate includes two first corners distributed on both sides of the light source in the first direction; the first auxiliary partition is distributed between the outer edge of the first corner and the light beam emitted by the outermost light-emitting unit among the plurality of light-emitting units; the overall extension direction of the first auxiliary partition intersects with the first direction.

12. The backlight module according to claim 11, characterized in that, The hollow area includes a first hollow area, and the orthographic projection of the first hollow area on the back panel is located within the orthographic projection of the first auxiliary partition on the back panel. The shape of the first hollow area projected onto the back plate is similar to the shape of the first contact portion projected onto the back plate. And / or, the shape of the orthographic projection of the first cutout area on the back panel is similar to the shape of the orthographic projection of the first auxiliary partition on the back panel.

13. The backlight module according to claim 12, characterized in that, The shape of the first contact portion projected onto the back plate is rectangular, and the direction of the long side of the rectangle is parallel to the overall extension direction of the first auxiliary partition. Alternatively, the shape of the first contact portion projected onto the back plate is an arch formed by a circular arc edge and a straight edge, wherein the direction of the straight edge of the arch is parallel to the overall extension direction of the first auxiliary partition, and the circular arc edge of the arch is located on the side of the straight edge away from the corner portion. Alternatively, there may be multiple first contact portions whose orthographic projections are located within the same first auxiliary partition. The orthographic projections of each first contact portion on the back plate are square, circular, or elliptical in shape, and the area of ​​the orthographic projections of the multiple first contact portions on the back plate gradually decreases along the transmission direction of the light beam emitted by the light-emitting unit.

14. The backlight module according to any one of claims 10 to 13, characterized in that, When the auxiliary partition includes multiple second auxiliary partitions, the contact portion includes a second contact portion, and the orthographic projection of the second contact portion on the back panel is located within the orthographic projection of the second auxiliary partition on the back panel; The second auxiliary partition is distributed between the light guide plate near the boundary of the light source and the light beams emitted by two adjacent light-emitting units.

15. The backlight module according to claim 14, characterized in that, The hollow area includes a second hollow area, and the orthographic projection of the second hollow area on the back panel is located within the orthographic projection of the second auxiliary partition on the back panel. The shape of the orthographic projection of the second hollow area on the back plate is similar to the shape of the orthographic projection of the second contact portion on the back plate.

16. The backlight module according to claim 15, characterized in that, The shape of the orthographic projection of the second hollow area on the back panel is similar to the shape of the orthographic projection of the second auxiliary partition on the back panel.

17. The backlight module according to claim 15, characterized in that, The backlight module further includes: an auxiliary contact portion, which is fixedly connected to the second contact portion, and the auxiliary contact portion and the second contact portion are an integral structure; and the orthographic projection of the auxiliary contact portion on the back plate is located within the orthographic projection of the light source on the back plate; The reflective sheet also has an auxiliary cutout area, the orthographic projection of which on the back plate is located between the orthographic projections of two adjacent light-emitting units on the back plate. The orthographic projection of the auxiliary contact portion on the back plate is located within the orthographic projection of the auxiliary hollow area on the back plate.

18. The backlight module according to claim 17, characterized in that, The frame also includes an outer frame that is connected to the outer edge of the back plate; Wherein, if no baffle is provided on the side of the outer frame adjacent to the light source facing the light source, the auxiliary contact portion is distributed between at least two connected light-emitting units in the first direction; Alternatively, if a first barrier is provided on the side of the outer frame adjacent to the light source facing the light source, the orthographic projection of the auxiliary contact portion on the back plate is located between the orthographic projection of the first barrier on the back plate and the orthographic projection of the light guide plate on the back plate.

19. The backlight module according to claim 18, characterized in that, When the portion of the outer frame adjacent to the light source is not provided with a barrier on the side facing the light source, and the second contact portion is a conductive portion, the orthographic projection of the auxiliary contact portion on the back plate overlaps with the orthographic projection of the two connected light-emitting units on the back plate.

20. The backlight module according to claim 19, characterized in that, The second contact portion and the auxiliary contact portion are circular or triangular in shape when projected onto the back plate.

21. A display device, characterized in that, include: A backlight module, and a liquid crystal display panel located on the light-emitting side of the backlight module; The backlight module is the backlight module according to any one of claims 1 to 20.

22. The display device according to claim 21, characterized in that, The liquid crystal display panel includes: an array substrate, a color filter substrate, a first polarizer, and a conductive adhesive portion; The array substrate and the color filter substrate are disposed opposite to each other, and the portion of the array substrate that protrudes from the color filter substrate is the substrate protrusion. The first polarizer is located on the side of the color filter substrate away from the array substrate, and the portion of the first polarizer protruding from the color filter substrate is a polarizing protrusion; the side of the substrate protrusion facing the first polarizer has a ground electrode, and the orthographic projection of the ground electrode on the first polarizer overlaps with the area where the polarizing protrusion is located. The conductive adhesive portion is located between the substrate protrusion and the polarizing protrusion, and the two sides of the conductive adhesive portion that are opposite to each other are in direct contact with the ground electrode and the polarizing protrusion, respectively.

23. The display device according to claim 22, characterized in that, The orthographic projection of the conductive adhesive portion on the array substrate covers the area where the ground electrode is located.

24. The display device according to claim 22, characterized in that, The polarizing protrusion has a first window area, and the orthographic projection of the first window area on the array substrate overlaps with the orthographic projection of the conductive adhesive portion on the array substrate.

25. The display device according to any one of claims 22 to 24, characterized in that, The side of the substrate protrusion facing the first polarizer also has a plurality of functional electrodes, and the orthographic projection of the polarizing protrusion on the array substrate overlaps with the area where the plurality of functional electrodes are located. The liquid crystal display panel further includes: an insulating adhesive portion located between the substrate protrusion and the polarizing protrusion; The orthographic projection of the insulating adhesive portion on the array substrate covers the area where the plurality of functional electrodes are located.

26. The display device according to claim 25, characterized in that, The protruding portion of the substrate also has an alignment mark on the side facing the first polarizer. The area where the alignment mark is located is between the orthographic projection of the conductive adhesive portion on the array substrate and the orthographic projection of the insulating adhesive portion on the array substrate.

27. The display device according to claim 26, characterized in that, The polarizing protrusion has a second window area, the orthographic projection of which covers the area where the alignment mark is located on the array substrate.

28. The display device according to claim 27, characterized in that, When the polarizing protrusion has both the first window area and the second window area, the first window area and the second window area are connected, or the first window area and the second window area are separated. Wherein, the first window area and / or the second window area are connected to the outer edge of the polarizing protrusion, or the first window area and / or the second window area are spaced apart from the outer edge of the polarizing protrusion.

29. The display device according to any one of claims 22-24 and 26-28, characterized in that, The polarizing protrusion has a hollowed-out avoidance area; the substrate protrusion also has a plurality of bonding electrodes on the side facing the polarizing protrusion, the plurality of bonding electrodes being used for bonding and connecting with the driving component; The hollowed-out avoidance area, when projected onto the array substrate, covers the region where the multiple bonded electrodes are located.

30. The display device according to claim 29, characterized in that, The liquid crystal display panel further includes: a protective cover plate and a second polarizer; the protective cover plate is located on the side of the first polarizer away from the color filter substrate, and the second polarizer is located on the side of the array substrate away from the color filter substrate.

31. A liquid crystal display panel, characterized in that, include: Array substrate, color filter substrate, first polarizer and conductive adhesive portion; The array substrate and the color filter substrate are disposed opposite to each other, and the portion of the array substrate that protrudes from the color filter substrate is the substrate protrusion. The first polarizer is located on the side of the color filter substrate away from the array substrate, and the portion of the first polarizer protruding from the color filter substrate is a polarizing protrusion. The substrate protrusion has a ground electrode on the side facing the polarizing protrusion, and the area where the ground electrode is located overlaps with the orthographic projection of the polarizing protrusion on the array substrate. The conductive adhesive portion is located between the substrate protrusion and the polarizing protrusion, and the two sides of the conductive adhesive portion that are opposite to each other are in direct contact with the ground electrode and the polarizing protrusion, respectively.

Images